In fact, Lodsys is so confident it's right, it says it will pay $1,000 to every developer it contacted if Apple turns out to be right. It also began filing lawsuits today to "preserve its legal options."

Earlier this month, Lodsys sent letters to some iOS developers demanding license fees for a patent related to putting an "upgrade" button in apps.

Apple had already licensed the patent in question, and last week Apple chief counsel Bruce Sewell published a letter saying that its license covers iOS developers, too.